Drilling-machine



E. L. DILLON.

DRILLING MACHINE.

APPLICATION FILED MAY 25. 19H.

1,309,277. Pa tent-ed July 8, 1919.

19 '7 7 Fig.1.

Fig.2.

T L J 18 21 U III/VENTOR UNITED STATES PATENT OFFICE.

EDWARD L. DILLON, or sr. LOUIS, MISSOURI, AssrenoR TO LORENZO noRvnLL, TRUSTEE, on ST. LOUIS, MISSOURI.

Specification of Letters Patent.

DRILLING-MACHINE.

Patented July 8, 1919.

Application filed May 25, 1917. Serial No. 170,836.

To all whom it may concern:

Be it known that I, EDWARD L. DILLON, a citizen of the United States of America, residing at the city of St. Louis, State of Missouri, United States of America, have invented a certain new and useful Drilling- Machine, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a drilling machine and has for its object the provision of a machine in which the sand reel may be reversed without either reversing the engine or using special reversing gears, the reversing device being a part of the sand reel mechanism.

In the accompanying drawings, Figure 1 is a top plan view, partly in section; and Fig. 2 is a side elevation, showing as much of a drilling machine as is necessary to illustrate my invention.

5 represents a derrick structure provided with a floor 6, from one end of which projects a supporting frame work 7 on which is carried a post 8, supporting a walking-beam 9. 10 is a band wheel, which is supported by posts 11, carried by said frame work 7. The band wheel. 10 is provided with a crank arm 12, adapted to be engaged by a pitman 13 to operate the walking beam 9 in the operation of drilling. All of these parts may be of any usual and well-known construction.

15 is a sand reel which is carried on a shaft or axle 16, journaled in rocking frames 17. These rocking frames 1.7 are carried on trunnions 18, mounted in bearings 19, car ried by the supporting frame 7. Rigidly secured to one end of the shaft 16 of the sand reel 15 is a friction wheel 20, which is adapted to be moved into contact with the periphery of the band wheel 10 in order to drive the sand reel in one direction. The frames 17 also carry an auxiliary friction wheel 21 which is permanently in contact with the friction wheel 20, and is adapted to be thrown into contact with the periphery of the band wheel 10 to drive the sand reel in the opposite direction to that in which it is driven when the main friction wheel 20 is in contact with said wheel 10. The

frame 17 carrying the auxiliary friction wheel 21 also carries an upwardly projecting arm. 22 to which is pivoted one end of a connecting rod 23, the opposite end of which is pivoted to an arm 2-1, provided with a sliding bolt 25, engaging with a notched are 26. When the arm, 2a is in its central position, as shown in Fig. 2 of the drawings, the rocking frames 17 are held in such position that neither the friction wheel 20, nor the auxiliary friction wheel 21 is in contact with the periphery of the band wheel 10, and consequently the sand reel 15 is thrown out of operation. lVhen the arm 24f is moved toward the right in Fig. 2 of the drawings, the main friction wheel 20 will be thrown into contact with the periphery of the band wheel 10 and locked in such position by engagement of the sliding bolt 25 with one of the notches in the are 26. The parts will thus be held in operative position to drive the sand reel in one direction. When it is desired to drive the sand reel in the opposite direction the arm 24 is moved toward the left of Fig. 2 of the drawings, so as to move the friction wheel 20 out of contact with the band wheel, and to move the auxiliary friction wheel 21 into contact with said band wheel, thus driving the sand reel in the opposite direction. It will be noted that the position of the auxiliary friction wheel 21 is such that when it is in operative position the friction of the parts will tend to hold it firmly in contact with the wheel 20, so that even in case of some wear in its bearings the parts will. retain their operative relation.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

In a well drilling machine, the combination with a band wheel, of a rocking frame, a sand reel carried by said frame and pro vided with a friction wheel, a second friction wheel carried by said frame and held in constant contact with said first named friction wheel, and means for moving said frame to bring one or the other of said friction wheels into contact with said band wheel to drive said sand reel forward or backward.

In testimony whereof, I have hereunto set my hand and affixed my seal.

EDWARD L. DILLON. [Ls] Copies 01' this patent may be obtained for five cents each, by addressing the Commissioner of iratents, Washington, D. G. 

